Power Supply Connections - OSD NETWORKS OSD2258EP Operator's Manual

2.2.3 LOCATION
As with any electrical device, the OSD2258EP should be placed where the switch will not be
subjected to extreme temperatures, humidity, or electromagnetic interference. Specifically,
the site selected should meet the following requirements:
•
The ambient temperature should be between -40°C to 75°C.
•
The relative humidity should be less than 95 percent, non-condensing.
•
Surrounding electrical devices should not exceed the electromagnetic field (RFC)
standards.
•
Make sure that the switch receives adequate ventilation. Do not block the ventilation
holes on any side of the switch.
Note: Without proper cooling and control (lowering) of ambient temperature, the components
within the OSD2258EP can be subject to increased heat shortening the longevity and
reliability. It is thus good engineering practice to ensure the unit is installed in a well ventilated
area.
2.2.4

POWER SUPPLY CONNECTIONS

The OSD2258EP requires external power to the Redundant DC Terminal Block Power
Connector located at the top of the unit. Always ensure that the power is off before any
installation.
Redundant DC Terminal Block Power Inputs
There are two pairs of power inputs for use with redundant power sources. Only one power
input is required to be connected to run the switch.
Step 1: Connect the DC power to the appropriate power source, connect the plug-able
terminal block on the OSD2258EP switch and then turn power on.
Step 2: Disconnect the power if you want to shut down the switch.
External Power Pin
≥52V recommended for PoE+ or ≥ 55V
*
DC
PAGE 11
TABLE 2: POWER CONNECTION
Power 1 +
Power 1 0V
Power 2 +
Power 2 0V
for 60W PoE
DC
FIGURE 4: POWER SUPPLY CONNECTIONS
OSD2258EP Operator Manual
Specification
46V to 57V @ 260VA*
DC DC
Ground – 0V
46V to 57V @ 260VA*
DC DC
Ground – 0V
Earth Ground Connection
10119802